Finding the Fourth Proportional to 3,728.15, 5,143.37 and 2,402.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.15 : 5,143.37 = 2,402.63 : x
2. Step 2: Convert to fraction form
   3,728.15/5,143.37 = 2,402.63/x
3. Step 3: Cross multiply
   3,728.15x = 5,143.37 × 2,402.63
4. Step 4: Simplify right side
   3,728.15x = 12,357,577.33
5. Step 5: Solve for x
   x = 12,357,577.33/3,728.15
6. Step 6: Final answer
   x = 3,314.67